FATAL: lmtpd: unable to init duplicate delivery database

[Marcus]

Hi,

I got the following error in my log (cyrus 2.2.13-14+lenny3):

--------------------------
Apr  5 04:12:48 server cyrus/lmtpunix[8473]: IOERROR:
lock_shared /var/lib/cyrus/deliver.db: Interrupted system call
Apr  5 04:12:48 server cyrus/lmtpunix[8473]: DBERROR:
opening /var/lib/cyrus/deliver.db: cyrusdb error
Apr  5 04:12:48 server cyrus/lmtpunix[8473]: FATAL: lmtpd: unable to
init duplicate delivery database
Apr  5 04:12:48 server cyrus/master[21374]: process 8473 exited, status
75
Apr  5 04:12:48 server cyrus/master[21374]: service lmtpunix pid 8473 in
READY state: terminated abnormally
Apr  5 04:12:48 server cyrus/master[8534]: about to
exec /usr/lib/cyrus/bin/lmtpd
Apr  5 04:12:48 server cyrus/lmtpunix[8534]: executed
Apr  5 04:12:48 server cyrus/lmtpunix[8534]: accepted connection
Apr  5 04:12:48 server cyrus/lmtpunix[8534]: lmtp connection preauth'd
as postman
--------------------------

I've seen the three times in my log: 

 Apr  3 04:08:57
 Apr  4 04:08:53
 Apr  5 04:12:48 
 today 6th April no error

At 28th March I've changed to skiplist for duplicate and tlscache:

imapd.conf:
duplicate_db: skiplist
tlscache_db: skiplist

--------------------------
/var/lib/cyrus# file *.db
annotations.db:  Cyrus skiplist DB
deliver.db:      Cyrus skiplist DB
mailboxes.db:    Cyrus skiplist DB
tls_sessions.db: Cyrus skiplist DB
--------------------------

delprune starts at=0401.

--------------------------
/var/lib/cyrus# ls -al
insgesamt 7572
drwxr-x--- 11 cyrus mail    4096  6. Apr 05:26 .
drwxr-xr-x 40 root  root    4096 28. Mär 04:08 ..
-rw-------  1 cyrus mail     144 28. Mär 04:25 annotations.db
drwx------  2 cyrus mail    4096 28. Mär 04:25 db
drwx------  2 cyrus mail    4096  6. Apr 05:26 db.backup1
drwx------  2 cyrus mail    4096  6. Apr 04:56 db.backup2
-rw-------  1 cyrus mail 1972804  6. Apr 05:52 deliver.db
-rw-------  1 cyrus mail 4993024 28. Mär 03:49 deliver.db.old
drwx------  2 cyrus mail    4096  7. Feb 17:03 log
-rw-------  1 cyrus mail  164400  5. Apr 21:52 mailboxes.db
drwx------  2 cyrus mail    4096  7. Feb 17:03 msg
drwx------  2 cyrus mail    4096  6. Apr 05:55 proc
drwx------ 28 cyrus mail    4096  7. Feb 17:03 quota
drwxr-x---  2 cyrus mail    4096  5. Mär 00:20 socket
-rw-------  1 cyrus mail  210152  6. Apr 05:49 tls_sessions.db
-rw-------  1 cyrus mail  327680 28. Mär 03:49 tls_sessions.db.old
drwx------ 28 cyrus mail    4096  7. Feb 17:03 user
--------------------------

.db.old files are copies of the old berkeley database files. 

Any ideas?

Thanks
Marcus